wireing problem
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Senior User
Joined: Feb 2008
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wireing problem
I recently obtained a used (1997) aerostar to replace my 1989 that has a bad engine. The 1997 had a damaged rear door that needed t be replaced.
So, I took the rear door off the 89 . It fit perfectly on the 97 but, the wiring is different. Had to cut all the wires from the doors to remove them.
When I checked the lights after installing the door I needed only a license plate light (I thought). I used my test light to find and connect the license plate light. When taking a test drive I discovered that the cruse control does not work any more. My son says the wires that I cut on the 97 are probably the reason for no cruse control.
There are several wires, all taped, but not connected. Does anyone know how I can find the wire (s) and how to connect them: if they caused the cruse control to stop working?
So, I took the rear door off the 89 . It fit perfectly on the 97 but, the wiring is different. Had to cut all the wires from the doors to remove them.
When I checked the lights after installing the door I needed only a license plate light (I thought). I used my test light to find and connect the license plate light. When taking a test drive I discovered that the cruse control does not work any more. My son says the wires that I cut on the 97 are probably the reason for no cruse control.
There are several wires, all taped, but not connected. Does anyone know how I can find the wire (s) and how to connect them: if they caused the cruse control to stop working?
Elder User
Joined: Jan 2004
Posts: 558
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From: North Alabama
I guess the first question here would be liftgate or cargo doors.
You might also check your turn signals, because the 97 used a red/white light assembly instead of the red/amber/white used on all the other years.
You might also check your turn signals, because the 97 used a red/white light assembly instead of the red/amber/white used on all the other years.
Lead Driver
Joined: Sep 2003
Posts: 7,012
Likes: 204
From: SoCal
The cruise control (and torque converter lock-up) have to work with the rear ABS (RABS) to function properly. One of the things the RABS does is a check of all the light bulbs used by the brake system to determine whether it wants to function. I think the 1997 models have that third brake light on top of the hatch, and the 1989 model does not. That may be one of the bulbs checked by the RABS. Are you getting any brake warning lights (specifically one for the RABS)? Try installing a small light bulb into the rear wiring harness, even if it's going to be hidden inside the hatch. Also, check to make sure your other brake light bulbs are still working.
Elder User
Joined: Dec 2006
Posts: 830
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From: Kitchener,Ontario,Canada
Brake circuit Wattage.
The cruise control (and torque converter lock-up) have to work with the rear ABS (RABS) to function properly. One of the things the RABS does is a check of all the light bulbs used by the brake system to determine whether it wants to function. I think the 1997 models have that third brake light on top of the hatch, and the 1989 model does not. That may be one of the bulbs checked by the RABS. Are you getting any brake warning lights (specifically one for the RABS)? Try installing a small light bulb into the rear wiring harness, even if it's going to be hidden inside the hatch. Also, check to make sure your other brake light bulbs are still working.
